Construction of Stanchions for Water tanks

With reference to my last post titled Setting out : The Rudiments, I wish to share the actual construction details of the column bases discussed earlier.
The portions set out are to be excavated to a depth of 1200mm (or more depending on the design of pad foundation but 1.2m is the usual).
The bottom of excavations are then blinded up to a height of 50mm.

Place the reinforcements and cast pad base to cover up the reinforcements’ baskets up to a height of 250mm.

Place the formworks for columns in foundations and set them in alignment using the plywood plates on them and the lines used for setting out their centres as described in the previous write up. Then brace up the formworks together to stop them from going out of place during casting.

Cast the columns in foundations leaving out the threaded part of the reinforcements. These threaded parts are to hold the stanchions’ plates which serve as their bases.
Strike out the formworks after 24 hours.

From this point on, steel workers should take over and erect the H-sections as shown below;

Angle irons should then be bolted to the gusset plates on the H-sections . I-sections are then welded to the top plates of the standing H sections. Then weld the wire mesh across the top of the I-sections. Handrails should also be provided at the top. Below is what the whole process should end up to;

There are no hard and fast rules to the construction of this but to adhere strictly to the engineer’s design.

“docendo discitur”: It is learned by teaching.